When a cam belt (also known as a timing belt) snaps or breaks while the engine is running, it can cause severe damage to internal parts of the engine, particulary the valves and pistons.
The cam belt synchronises the timing of the engine's valves and pistons. it transmits the motion from the crankshaft to the camshaft, ensuring that the valves open and close at the right times to allow air, fuel, and exhaust to flow in and out of the cylinders .
If the cam belt breaks, this synchronisation is lost and the valves may hit the pistons, causing significant damage. The valves may bend, break or become misaligned , and the pistons may be damaged or cracked, When this happens, the engine cannot function properly and may experience internal damage beyong repair.
While it is possible, in rare cases, to repair the engine and replace the damaged components, it often ends up being more economical and practical to replace the engine entirely.
The extent of the damage and whether a new engine is required can be determined by a qualified mechanic or technician who can assess the engine condition internally and provide the most appropriate course of action based on the findings.
